C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

spark plug replacement

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Old Jun 13, 2009 | 08:13 AM
  #1  
brent317's Avatar
brent317
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From: lore city ohio
Default spark plug replacement

I just bought a 95 c-4 and think it needs to have the plugs changed. How much trouble am i going to have? Can I do all the plugs from above the engine compartment since I don't have a hoist. This is my first vette and I just joined this forum about 5 days ago. Would appreciate you guys help. Thanks Brent317
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Old Jun 13, 2009 | 08:49 AM
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93v
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From: lancaster pa
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Just changed mine this week.I got all mine on the pass. side from up top.The driver side was a diffrent story,I took off the inner fender well and the cover over the upper a frame,loosened the asr.You need a good assortment of sockets ,extensions.About 4 hours later and some scraped up skin your'e done.Only took me a little longer to do these than the ones in my c5.
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Old Jun 13, 2009 | 09:12 AM
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M. Schumacher
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Yeah, you can do them all from the top.

Yeah, it's a PITA.

There's probably going to be crud around the plug holes so clean around them while the old ones are still in.

The driver's side is reasonable. IIRC it helps to unfasten the asr device to gain room.

The front two on the passenger side are okay. It's number six and especially number eight that take some figuring out, due to no clearance.

Having the right tools will help immensely. I use a long handled, flex-head ratchet. I also have a very short extension which has a thumb wheel. Quite handy when you're working with your fingertips.

The most difficult part is getting the new plug started into number eight. Some suggest using a piece of hose on the plug to turn it. However you do it, be careful to get the plugs started straight and don't over tighten them.
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Old Jun 13, 2009 | 09:42 AM
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From: Charlotte NC
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Originally Posted by M. Schumacher
Yeah, you can do them all from the top.

Yeah, it's a PITA.

There's probably going to be crud around the plug holes so clean around them while the old ones are still in.

The driver's side is reasonable. IIRC it helps to unfasten the asr device to gain room.

The front two on the passenger side are okay. It's number six and especially number eight that take some figuring out, due to no clearance.

Having the right tools will help immensely. I use a long handled, flex-head ratchet. I also have a very short extension which has a thumb wheel. Quite handy when you're working with your fingertips.

The most difficult part is getting the new plug started into number eight. Some suggest using a piece of hose on the plug to turn it. However you do it, be careful to get the plugs started straight and don't over tighten them.
Be careful w/ #8. The rest are pretty straight-forward with some patience. All I remove is the driver's fenderwell panel.

The real PITA will be when you're ready to replace your wires. I seriously think the next time I do that I'll be removing the water pump for access.
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Old Jun 13, 2009 | 07:50 PM
  #5  
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From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
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Here's a write-up I did for our 94 -- take a read...

http://forums.corvetteforum.com/c4-g...r55ix-gap.html
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